thanks a lot to all of you. as i said, i've already performed a serial rasterization in 6.4.x through the path Nikos suggested, good to know that something for vectors exists in 7.
i'll also have a look at the trimming-borders hints and keep you updated. Anna On Sat, Nov 30, 2013 at 11:07 AM, Nikos Alexandris <[email protected]>wrote: > Francesco Pirotti UNIPD wrote: > > > Just a shot: rasterize a vector polygon and use the rasterized area (or > > areas) as mask? > > I wouldn't think otherwise too. In GRASS GIS 6.4.x you have to go this path > along (v.to.rast, r.mask, r.mapcalc). In GRASS GIS 7, however, you can > mask > from a vector directly (i.e. r.mask vector=SomeVectorMap). > > Ensure to have set the resolution of the region to the one you desire as an > output. Most of the times it should match the resolution of the raster > map(s) > to be masked. Otherwise, a resampling (based on Nearest Neighbour) will > take > place. > > Nikos >
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